108343-64-2Relevant academic research and scientific papers
Selective and mild synthesis of mono- and diarylated group 13-15 halides using [CuMes]n, a readily available, thermally stable organocopper(I) reagent
J?kle, Frieder,Manners, Ian
, p. 2628 - 2632 (1999)
The use of mesitylcopper, a soluble, thermally stable arylcopper compound, was investigated as an alternative to less selective organolithium and Grignard reagents or toxic mercury, tin, and organozinc compounds. [CuMe]5·toluene (1) was found to readily react with various main group metal halides MXn and RMXn (M = B, Sn; X = Cl, Br; R = nBu, Ph, 1,1′-fc) to give, depending on the stoichiometry of the reactions, monoarylated, diarylated, or mixed substituted species MesMXn-1, Mes2MXn-2, and MesRMXn-1 (2-5) in high yields.
Sterically hindered organotin compounds II. Synthesis of the organotin halides (mesityl)2SnXnY2-n, (mesityl)SNXnY3-n and R4Sn2X2 (R = 2,4,6-iPr3C6H2, X = Cl, Y = Br). Crystal structure of the ditin species (R2BrSn)2
Brown, Paul,Mahon, Mary F.,Molloy, Kieran C.
, p. 265 - 273 (2007/10/02)
Reaction of mesityllithium with SnCl4 (2:1) gives (mesityl)2SnCl2, while the corresponding reaction using mesitylmagnesium bromide gives a mixture of halogenato-products (mesityl)2SnCl2, (mesityl)2SnBr2 and (mesityl)2SnClBr.Reaction of this latter mixture with SnCl4 (1:1) gives the full range of (mesityl)SnXnY3-n (X = Cl, Y = Br).In contrast, the more sterically demanding carbanion source 2,4,6-iPr3C6H2Li reacts with SnCl4 or SnBr4 (1:1) to give the coupled ditin product (2,4,6-iPr3C6H2)4Sn2(hal)2.The structure of the bromide, iPr3C6H2)4Sn2Br2> (Sn-Sn) has been determined and shown to consist of molecular units in an approximately staggered conformation, with an Sn-Sn distance of 2.841(1) Angstroem.The molecule is highly sterically congested, leading to non-equivalence of methyl groups in some isopropyl units owing to hindered rotation about C-C and C-Sn bonds.
Verbindungen des Germaniums und Zinns. IX. Ein Stannacyclobuten aus einem sterisch ueberladenen Chlor(mesityl)stannan
Weidenbruch, Manfred,Schaefers, Karen,Schlaefke, Josephin,Peters, Karl,Schnering, Hans Georg von
, p. 343 - 348 (2007/10/02)
Reaction of trichloro(mesityl)stannane with 2,4,6-tri-t-butylphenyllithium (ArLi) in a 1/2 molar ratio, by rearrangement of one aryl group leads to chloro(mesityl)-2,4,6-tri-t-butylphenyl-stannane (3).Treatment of 3 with t-butyllithium gives the sterically congested stannacyclobutene derivative 4 which is fully characterized including an X-ray structure analysis.
Thiastannacyclohexanes (R2SnS)3 and -adamantanes (RSn)4S6: Syntheses, Properties, and Structure
Berwe, Hermann,Haas, Alois
, p. 1175 - 1182 (2007/10/02)
Cyclotristannathianes (4) are obtained from R2SnCl2 (1) and Na2S*9H2O or (CH3)3SiSSi(CH3)3.Analogously, hexathiatetrastannaadamantanes are prepared from RSnCl3(2) and the sulfenylating agents mentoined before.The reaction between dimesityltin dichloride (1a) and Na2S*9H2O depending on the reaction conditions yields either the corresponding dithiadistannacyclobutane (3) or cyclotristannathiane 4a.The structure of the cyclostannathianes 3, 4, and 5 are elucidated by determining the intensity ratio of geminal 119Sn-117Sn couplings.Calculated data are confirmed by experimental values.Additional proof is provided by measuring the change of intensity ratio in the 117Sn-NMR spectrum of 4c.X-ray structure determination proved for (C6F5Sn)4S6 (5g) to have the same geometry as in solution.
